Oh yeah I can see that happening, which is why I still scan the code! However, one thing I'll add is that AI-assisted coding requires adapting your workflow. Fortunately, it largely boils down to coding best-practices on steroids: docs, tests, tooling like linters, etc.
I throw tests at everything, even minor functions, preferably integration, maybe even some E2E with Playwright in web apps, at least for the happy paths. I actually pay more attention to the tests. The amazing thing is that the AI writes all of these and uses them as feedback to fix its mistakes.
But these validation guardrails are what has been driving down the issues I encounter. Without these the AI can make mistakes, and hence will require more in-depth manual review.